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ramé-hart instrument co.
March 2013 Newsletter
|Contact Angle Made Easy|
Some years ago I thought it would be nice
to find a basic easy-to-read and easy-to-understand book on contact
angle. No formulas, no highly technical jargon, just plain
easy-to-digest information for the average college-educated person
interested in understanding contact angle. I never found such a book and so that's when
I began to keep notes and collect ideas. Over the years some of those thoughts
have been developed into articles for this monthly newsletter
(which we began publishing in 2005). But only in the past year did I
finally find the time and energy to collate these ideas into book form. So, I'm pleased to announce the
publication of the First Edition of
Contact Angle Made Easy.
The book begins by explaining what contact angle is and why people want to measure it. I then discuss some of the methods that are used for measure contact angle - with particular focus on the drop profile image analysis method, which is the most common. I review the history of goniometry and talk about different types of instruments which have been developed over the years to measure contact angle and wetting (such as the original ramé-hart Wetometer).
Additional chapters cover topics such as advancing and receding contact angle, contact angle hysteresis, factors that affect contact angle, and some applications for contact angle. I cover the Wenzel and Cassie states as well as the effects of roughness on contact angle. Later chapters cover surface energy, surface tension, and interfacial tension, adhesive bonding, and topics such as superhydrophobicity and how to build a self-cleaning surface.
The book ends with a glossary of terms which mirrors our website glossary (which can be found here: http://www.ramehart.com/glossary.htm). Overall it's a pretty good overview of contact angle, its purpose, history, and how and why it's measured.
I am giving away free copies to everyone that purchases a new ramé-hart goniometer. So, that's one way to get your hands on a copy. If you purchased an instrument in the past few years, and would like to get a complimentary copy, please contact us and include your contact information with current mailing address and instrument serial number and we'll send one out at no charge. For everyone else, it's available at our webstore: http://www.ramehartstore.com/product.sc?productId=25&categoryId=5
Lastly, should you have any feedback, positive or negative, please forward it to my attention. I'm already making notes for the Second Edition.